Tag: "region" at biology news
Brain Protein "Rescues" Neurons From Atrophy
...ormally results in atrophy of neurons in the brain region
serving that eye, compared to the neurons serving the open eye. However, when the "closed-eye" neurons were treated with the neurotrophin NT-4, the neurons grew normally. Importantly, atrophy of the neurons was not prevented by other neurotrophins, c...
Key to Triplet Repeat Brain Diseases Open Door For New Way To Understand, Treat Genetic Diseases"
...herited neurologic disease, and that is the repeat region
of these proteinsbinds other proteins critical to glucose and oxygen metabolism in the brain.And the larger the repeat region, the tighter they bind." Authors of the study are from the same team that discovered the major genelinked to Alzheimer's di...
Second Breast Cancer Gene Located
... with a deletionof genetic material in the precise region
of BRCA2 also aided in localizingthe region
where the gene resides, Futreal said. The inherited mutations appear to damage the cell's a...
Core Spins Faster Than Earth, Scientists Find
.... Enormous pressure keeps theinner core solid in a region
of temperatures in the range of 7,000degrees Fahrenheit and possibly much higher. Fluidiron in the outer core has continued to solidify at the boundarybetween the two cores, so that over a billion years, the innercore has grown steadily to its presen...
Ocean Sediments Contain Record of Past Vegetation Fires in Africa
... air mass routes for the eastern tropical Atlantic region
indicates that the sediment in the core lies below several large-scale circulation pathways originating in Africa. Says Sancetta, "Verardo's work is important because he has uncovered a record of burning that goes beyond historical records, s...
How Birds Sing
...lectrodes. The four electrodes were poised above a region
called the HVc, known to be part of the bird's song production system, or another region
called the RA, a subordinate region
that receives input from the HVc and activates the muscles of th...
End Of World Population Growth Projected For 21st Century
...to increase to 30 percent by2050. Another world region
projected to see a dramatic aging of population is China and Centrally Planned Asia, whose proportion of those over 60 maygo from a current 9.2 percent to 25 percent by 2050 (under the most likelyscenario). "Within less than three decades, China's ol...
NCAR Scientists Trek To Africa For Biosphere-Atmosphere Chemistry Study
... atmosphere. "There's never been a program in this region
that has combined all the elements of photochemistry, biochemistry, and meteorology," says NCAR's Pat Zimmerman. The experiment's logistics are challenging. Early this year, scientist Lee Klinger and colleagues met a truck and trailer that were shipp...
North America Hit Hard By Asteroid Strike In Yucatan 65 Million Years Ago
...blique-impact hypothesis. North America, the first region
to experience thefireball, had the most severe ext...ent of the spore- or pollen-producing plantsin the region
after the impact, compared with only 10 to 40 percent before it.At the base of the food chain, plant...
An Equal Opportunity Extinction? Cincinnati Geologists Find Global Impact from Permian Die
...the fossil occurrences according to the geographic region
inwhich they were found during the Permian. This allowed him todetermine whether one region
was hit harder than another. Hisanalysis showed no clear difference among regions. Temperateareas we...
Antarctic Science Season Gears Up With Searches for Meteorites, Neutrinos, and New Life Forms
...California-Santa Barbara will sample archea in the region
this season, illuminating the ecology and biology of these mysterious organisms. Hot and Ultraviolet The greater amount of ultraviolet light (called UV-B) let in by the ozone hole reduces the productivity of marine phytoplankton, but how do...
Scientists Identify Retrovirus-Like Components In Corn Genome
...n says. In the study, Bennetzen's group analyzed a region
of the maize genome that contained two genes. The group discovered 10 different classes of retrotransposons within the region, with each class having 10 to 30,000 copies of its DNA segments scattered throughout the rest of the genome. In addition to ...
Scientists Trek to Africa for Biosphere-Atmosphere Chemistry Study
...hich funds NCAR and EXPRESSO. "The central Africa region
is one of several areas in the world that play an ... "There's never before been a program in this region
that has combined all the elements of photochemistry, biochemistry, and meteorology," says NCAR's Pa...
Animal Studies Indicate Aging Brain Responsive To Estrogen
...led granule cells inthe rats' hippocampus, a brain region
involved in spatial memory. The scientists'study of single neurons revealed that the rats exposed to acute estrogentreatment had 40 percent more connective elements, called "dendriticspines," on these neurons than did aged female rats with no estroge...
KU Researcher Eyes The Rain Forest Through The Trees
...isn't any more cost-effective to grow them in that region
than it would be to grow palm trees in Minnesota."...greement that the amount of deforested area in the region
is probably larger than ever before in human history, and problems are occurring because of this." O...
Bacterial Protein Structure Hints At Mechanism Of A Class Of Premature Aging Diseases
... helicaseon a molecular level. "There's a flexible region
on the helicase thatthe RTP seems to interact with," said White. To test how RTP works, the researchers had to create a mutant versionof the protein that would not interact with the helicase but wouldn't bedeformed beyond recognition. "O...
Two Long-sought Diabetes Gene Found
...onsible for the disease in this family, to a small region
on chromosome 20, but did not pinpoint the precise...2 in 1992. In 1995 they mapped MODY3 to a specific region
on chromosome 12. Last spring, Bell and colleagues mapped NIDDM1, the gene responsible for a signifi...
Researcher Discovers Key Brain Center For Speech
...ropsychologist Nina Dronkers foundthat damage to a region
known as the "insula" seems to be a crucialimpediment to the motor control necessary for words and sentences. For example,someone with damage to the insula might sound tongue-tied over such wordsas "tree," pronouncing them instead as "dree" or "free....
Pinpoint Gene Control Holds Promise For Nervous System Studies
...olecular andbehavioral changes. We can go into any region
of the centralnervous system, at any time during a...rease in the amount of NGF in the hippocampus, the region
ofthe brain where scientists inject the virus. The team hasdetected these elevated levels for as lon...
New Nonviral Gene Therapy System Could Help Fight Cancer
... is used to inject DNA and T7 RNApolymerase into a region
of tissue or muscle containing diseasedcells. The DNA is taken up by the cells, and the genes begin toexpress in the cytoplasm. The problem with most gene therapy techniques is gettingthe corrective genes inside the nucleus of diseased cells, sa...
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